piling,
n. [See
Pile a stake.].
A series of piles; piles considered collectively; as, the piling of a bridge. [1913 Webster]
Pug piling, sheet piles connected together at the edges by dovetailed tongues and grooves. -- Sheet piling, a series of piles made of planks or half logs driven edge to edge, -- used to form the walls of cofferdams, etc.